Just some notes-
I've heard using wool and spraying with Woolite or Sailkote can help prevent "sticking" to the sails-
Spreader length- This was a "big deal" at the A cat World's as it seems most of the US sailors were going to wider spreaders (even had one chap desperately seeking wider arms just prior!!) BUT Glenn and the Aussies were using "standard" spreader lengths- And we know who won overall.
The thing that impressed me the most about Glenn's boat was SIMPLICITY!
It was a STOCK GelTek Flyer with the only "mods" I could see a compass added and a small block at the lower shroud the downhaul was run through so it could be easily pulled ON from the trap.
Glenn carries I think he said 3 sets of battens for the top three- stiffer for higher wind.
Wing sails- NOT necessarily faster than the current crop of CF masts and square top sails- witness Ben (Hall's) very nice wing sail at the World's- He was fast downwind but hard to get upwind and hard to keep in the "groove"- Of course he is new with it and it's "1st generation" but there are LOTS of "issues" with "wings"- his was pretty much only up while he was out sailing- beyond that it was off the boat in it's "box" and if you capsize and IT fills with water <img src="http://www.catsailor.com/forums/images/graemlins/shocked.gif" alt="" /> <img src="http://www.catsailor.com/forums/images/graemlins/confused.gif" alt="" /> <img src="http://www.catsailor.com/forums/images/graemlins/blush.gif" alt="" /> <img src="http://www.catsailor.com/forums/images/graemlins/tongue.gif" alt="" />
Uni - Best to get a uni cut main although Jay (Glaser) told me they are now pretty much the same since the blade jib is so small but on the Taipans the sloop mains are cut flatter at the foot to keep the slot open vs the uni specific mains.
Your sailmaker should be able to tell you the "design parameters" of your sail- ie prebend you need and often the spreader length they recommend, although these are starting points as has been discussed.

Kirt